Machine for trimming box-corners



(No Mdel.)

G. H. FUCHS. A MACHINE FOR TRIMMINGv BOX GORNERS.

Patented Feb. 2, 1892.

AUNITED STATES PATENT OFFICE.

CHARLES Il. FUCHS, OF TIFFIN, OIIIO.`

MACHINE FOR TRIMMING BOX-CORNERS.

SPECIFICATION forming part of Letters Patent No. 468,095, dated February2, 1892.

Application nea January zz, 1891. serai No. 378,721; (No man.)

To all whom it may concern.:

Be it known that I, CHARLES Il. FUCHS, a citizen of the United States,residing at Tilhn, in the county of Seneca and State of Ohio, haveinvented certain new and useful Improvements in Machines for TrimmingBox- Corners, of which the followingis a specification, reference beinghad therein to the accompanying drawings.

Thisinvention relates to new and useful improvements in machines fortrimming the corners of wooden boxes; and it consists in the improveddevices whereby the projecting ends of the tenons which join the sidesof a wooden box together are neatly trimmed off.

The invention further consists in the peculiar construction,arrangement, and combination of the various parts, all as more fullyhereinafter described.

In the accompanying drawings, Figure lis a vertical section of myimproved machine. Fig. 2 .is a plan view of a portion thereof. Fig. 3 isan end elevation thereof. Fig. 4 is an end elevation of a box, showingthe projecting tenons.

A is the frame of the machine.

B is a table supported on top.

C is a shaft journaled in suitable boxes below the table.

l) is the pulley for revolvingthe shaft, and E is a revolving cuttersecured to the shaft and provided around its face withoppositelyinclined knives or teeth, the cutting-edges of which arepresented at right angles to each other. This cutter is preferablyformed of two like disks d a., having suitably beveled faces on whichthe cutting-teeth are formed. The two disks are clamped together uponthe shaft so as to form a right-angled depression around the face of thecutter.

G is a guide-bar supported upon the frame above the cutter and providedupon its upper face with a depression l-I, the sides of which are atright angles to each other and form inclined guide-faces I. A slot .I isformed in the bottom of the depression and a stop K is adjustablysecured in this depression. This guide-bar is vertically adjustable byany suitable means, such as the screws J', which support the guide-barat the ends, having suitable lock-nuts L to hold it in its adjustedposition. It desired, the guide-bar may be constructed in two halves, asshown in the draw ings, so as to be more conveniently manufactured, andthe slot .I may be enlarged where the cutter is secured to form aclearance for the dbris. The cutter is arranged in the longitudinalcenter of the guide-bar, and its cutting-edge on top forms thecomplementary apex of the angle of the guidefaces of said bar.

In practice, the parts heilig constructed and arranged as shown anddescribed, they are in-` tended to operate as follows: If a box joinedtogether in the usual manner and with the ends of the tenons slightlyprojecting at h, as shown in Fig. 4, is placed cornerwise into thedepression H of the guide-bar, the part of the corner to be trimmedprojects through the slot J, and upon pushing the box to pass over thecutter, while keeping it pressed against the guide-faces I, all theprojecting ends on both sides of the corner will be trimmed oii. In thismanner all the corners of the box are treated. Should the cutter wear,it can be sharpened by filing, which can be easily done when the twoparts of the cutter are separated and the guide-bar is adjustablevertically to enable the operator to set itin proper relation to thecutter. The office of the stop K is merely to tell the workman when thework is done, and it is therefore set at the proper distance away fromthe cutter, according to the length of the boxes to be trimmed, theguide-bar being made long enough to give ample length on either side ofthe cutter to receive boxes of all sizes.

My improved machine trims not only both sides of a corner at once, butit has the advantange over other machines devised for the purpose thatthe corners can in no wise be disfigured by cutting away any portion ofthe sides of the box.

What I claim as my invention is l. In a box-trimming machine, abox-corner-supporting guide and a cutter having a cutting-facecorresponding to the apex of the angle of said guide and mounted torevolve therein, substantially as described.

2. In a box-trimming machine, the combination of a box-corner-supportingguide, a revolving cutter having a cutting-face 'correspending to theangle of the apex of such guide and mounted to revolve therein, and

IOO

i an adjustable stop secured to such guide, subof a revolving cutter inroximitv to and Y C v mounted to revolve in the guide formed of twodisks clamped together, having inverselybeveled cutting-edgescorresponding to the 15 angle of the side of the guide, substantially asdescribed. y

Intestmony whereof I afx my signature in presence of two Witnesses.

CHARLES H. FUCHS.

Witnesses:

N. L. BREWER, H. D. MILLER.

